drivers/media/video/pms.c

   1 /*
   2  *      Media Vision Pro Movie Studio
   3  *                      or
   4  *      "all you need is an I2C bus some RAM and a prayer"
   5  *
   6  *      This draws heavily on code
   7  *
   8  *      (c) Wolfgang Koehler,  wolf@first.gmd.de, Dec. 1994
   9  *      Kiefernring 15
  10  *      14478 Potsdam, Germany
  11  *
  12  *      Most of this code is directly derived from his userspace driver.
  13  *      His driver works so send any reports to alan@lxorguk.ukuu.org.uk
  14  *      unless the userspace driver also doesn't work for you...
  15  *
  16  *      Changes:
  17  *      25-11-2009      Hans Verkuil <hverkuil@xs4all.nl>
  18  *                      - converted to version 2 of the V4L API.
  19  *      08/07/2003      Daniele Bellucci <bellucda@tiscali.it>
  20  *                      - pms_capture: report back -EFAULT
  21  */
  22
  23 #include <linux/module.h>
  24 #include <linux/delay.h>
  25 #include <linux/errno.h>
  26 #include <linux/fs.h>
  27 #include <linux/kernel.h>
  28 #include <linux/mm.h>
  29 #include <linux/ioport.h>
  30 #include <linux/init.h>
  31 #include <linux/version.h>
  32 #include <linux/mutex.h>
  33 #include <linux/uaccess.h>
  34 #include <asm/io.h>
  35
  36 #include <linux/videodev2.h>
  37 #include <media/v4l2-common.h>
  38 #include <media/v4l2-ioctl.h>
  39 #include <media/v4l2-device.h>
  40
  41 MODULE_LICENSE("GPL");
  42
  43
  44 #define MOTOROLA        1
  45 #define PHILIPS2        2               /* SAA7191 */
  46 #define PHILIPS1        3
  47 #define MVVMEMORYWIDTH  0x40            /* 512 bytes */
  48
  49 struct i2c_info {
  50         u8 slave;
  51         u8 sub;
  52         u8 data;
  53         u8 hits;
  54 };
  55
  56 struct pms {
  57         struct v4l2_device v4l2_dev;
  58         struct video_device vdev;
  59         int height;
  60         int width;
  61         int depth;
  62         int input;
  63         s32 brightness, saturation, hue, contrast;
  64         struct mutex lock;
  65         int i2c_count;
  66         struct i2c_info i2cinfo[64];
  67
  68         int decoder;
  69         int standard;   /* 0 - auto 1 - ntsc 2 - pal 3 - secam */
  70         v4l2_std_id std;
  71         int io;
  72         int data;
  73         void __iomem *mem;
  74 };
  75
  76 static struct pms pms_card;
  77
  78 /*
  79  *      I/O ports and Shared Memory
  80  */
  81
  82 static int io_port = 0x250;
  83 module_param(io_port, int, 0);
  84
  85 static int mem_base = 0xc8000;
  86 module_param(mem_base, int, 0);
  87
  88 static int video_nr = -1;
  89 module_param(video_nr, int, 0);
  90
  91
  92 static inline void mvv_write(struct pms *dev, u8 index, u8 value)
  93 {
  94         outw(index | (value << 8), dev->io);
  95 }
  96
  97 static inline u8 mvv_read(struct pms *dev, u8 index)
  98 {
  99         outb(index, dev->io);
 100         return inb(dev->data);
 101 }
 102
 103 static int pms_i2c_stat(struct pms *dev, u8 slave)
 104 {
 105         int counter = 0;
 106         int i;
 107
 108         outb(0x28, dev->io);
 109
 110         while ((inb(dev->data) & 0x01) == 0)
 111                 if (counter++ == 256)
 112                         break;
 113
 114         while ((inb(dev->data) & 0x01) != 0)
 115                 if (counter++ == 256)
 116                         break;
 117
 118         outb(slave, dev->io);
 119
 120         counter = 0;
 121         while ((inb(dev->data) & 0x01) == 0)
 122                 if (counter++ == 256)
 123                         break;
 124
 125         while ((inb(dev->data) & 0x01) != 0)
 126                 if (counter++ == 256)
 127                         break;
 128
 129         for (i = 0; i < 12; i++) {
 130                 char st = inb(dev->data);
 131
 132                 if ((st & 2) != 0)
 133                         return -1;
 134                 if ((st & 1) == 0)
 135                         break;
 136         }
 137         outb(0x29, dev->io);
 138         return inb(dev->data);
 139 }
 140
 141 static int pms_i2c_write(struct pms *dev, u16 slave, u16 sub, u16 data)
 142 {
 143         int skip = 0;
 144         int count;
 145         int i;
 146
 147         for (i = 0; i < dev->i2c_count; i++) {
 148                 if ((dev->i2cinfo[i].slave == slave) &&
 149                     (dev->i2cinfo[i].sub == sub)) {
 150                         if (dev->i2cinfo[i].data == data)
 151                                 skip = 1;
 152                         dev->i2cinfo[i].data = data;
 153                         i = dev->i2c_count + 1;
 154                 }
 155         }
 156
 157         if (i == dev->i2c_count && dev->i2c_count < 64) {
 158                 dev->i2cinfo[dev->i2c_count].slave = slave;
 159                 dev->i2cinfo[dev->i2c_count].sub = sub;
 160                 dev->i2cinfo[dev->i2c_count].data = data;
 161                 dev->i2c_count++;
 162         }
 163
 164         if (skip)
 165                 return 0;
 166
 167         mvv_write(dev, 0x29, sub);
 168         mvv_write(dev, 0x2A, data);
 169         mvv_write(dev, 0x28, slave);
 170
 171         outb(0x28, dev->io);
 172
 173         count = 0;
 174         while ((inb(dev->data) & 1) == 0)
 175                 if (count > 255)
 176                         break;
 177         while ((inb(dev->data) & 1) != 0)
 178                 if (count > 255)
 179                         break;
 180
 181         count = inb(dev->data);
 182
 183         if (count & 2)
 184                 return -1;
 185         return count;
 186 }
 187
 188 static int pms_i2c_read(struct pms *dev, int slave, int sub)
 189 {
 190         int i;
 191
 192         for (i = 0; i < dev->i2c_count; i++) {
 193                 if (dev->i2cinfo[i].slave == slave && dev->i2cinfo[i].sub == sub)
 194                         return dev->i2cinfo[i].data;
 195         }
 196         return 0;
 197 }
 198
 199
 200 static void pms_i2c_andor(struct pms *dev, int slave, int sub, int and, int or)
 201 {
 202         u8 tmp;
 203
 204         tmp = pms_i2c_read(dev, slave, sub);
 205         tmp = (tmp & and) | or;
 206         pms_i2c_write(dev, slave, sub, tmp);
 207 }
 208
 209 /*
 210  *      Control functions
 211  */
 212
 213
 214 static void pms_videosource(struct pms *dev, short source)
 215 {
 216         switch (dev->decoder) {
 217         case MOTOROLA:
 218                 break;
 219         case PHILIPS2:
 220                 pms_i2c_andor(dev, 0x8a, 0x06, 0x7f, source ? 0x80 : 0);
 221                 break;
 222         case PHILIPS1:
 223                 break;
 224         }
 225         mvv_write(dev, 0x2E, 0x31);
 226         /* Was: mvv_write(dev, 0x2E, source ? 0x31 : 0x30);
 227            But could not make this work correctly. Only Composite input
 228            worked for me. */
 229 }
 230
 231 static void pms_hue(struct pms *dev, short hue)
 232 {
 233         switch (dev->decoder) {
 234         case MOTOROLA:
 235                 pms_i2c_write(dev, 0x8a, 0x00, hue);
 236                 break;
 237         case PHILIPS2:
 238                 pms_i2c_write(dev, 0x8a, 0x07, hue);
 239                 break;
 240         case PHILIPS1:
 241                 pms_i2c_write(dev, 0x42, 0x07, hue);
 242                 break;
 243         }
 244 }
 245
 246 static void pms_saturation(struct pms *dev, short sat)
 247 {
 248         switch (dev->decoder) {
 249         case MOTOROLA:
 250                 pms_i2c_write(dev, 0x8a, 0x00, sat);
 251                 break;
 252         case PHILIPS1:
 253                 pms_i2c_write(dev, 0x42, 0x12, sat);
 254                 break;
 255         }
 256 }
 257
 258
 259 static void pms_contrast(struct pms *dev, short contrast)
 260 {
 261         switch (dev->decoder) {
 262         case MOTOROLA:
 263                 pms_i2c_write(dev, 0x8a, 0x00, contrast);
 264                 break;
 265         case PHILIPS1:
 266                 pms_i2c_write(dev, 0x42, 0x13, contrast);
 267                 break;
 268         }
 269 }
 270
 271 static void pms_brightness(struct pms *dev, short brightness)
 272 {
 273         switch (dev->decoder) {
 274         case MOTOROLA:
 275                 pms_i2c_write(dev, 0x8a, 0x00, brightness);
 276                 pms_i2c_write(dev, 0x8a, 0x00, brightness);
 277                 pms_i2c_write(dev, 0x8a, 0x00, brightness);
 278                 break;
 279         case PHILIPS1:
 280                 pms_i2c_write(dev, 0x42, 0x19, brightness);
 281                 break;
 282         }
 283 }
 284
 285
 286 static void pms_format(struct pms *dev, short format)
 287 {
 288         int target;
 289
 290         dev->standard = format;
 291
 292         if (dev->decoder == PHILIPS1)
 293                 target = 0x42;
 294         else if (dev->decoder == PHILIPS2)
 295                 target = 0x8a;
 296         else
 297                 return;
 298
 299         switch (format) {
 300         case 0: /* Auto */
 301                 pms_i2c_andor(dev, target, 0x0d, 0xfe, 0x00);
 302                 pms_i2c_andor(dev, target, 0x0f, 0x3f, 0x80);
 303                 break;
 304         case 1: /* NTSC */
 305                 pms_i2c_andor(dev, target, 0x0d, 0xfe, 0x00);
 306                 pms_i2c_andor(dev, target, 0x0f, 0x3f, 0x40);
 307                 break;
 308         case 2: /* PAL */
 309                 pms_i2c_andor(dev, target, 0x0d, 0xfe, 0x00);
 310                 pms_i2c_andor(dev, target, 0x0f, 0x3f, 0x00);
 311                 break;
 312         case 3: /* SECAM */
 313                 pms_i2c_andor(dev, target, 0x0d, 0xfe, 0x01);
 314                 pms_i2c_andor(dev, target, 0x0f, 0x3f, 0x00);
 315                 break;
 316         }
 317 }
 318
 319 #ifdef FOR_FUTURE_EXPANSION
 320
 321 /*
 322  *      These features of the PMS card are not currently exposes. They
 323  *      could become a private v4l ioctl for PMSCONFIG or somesuch if
 324  *      people need it. We also don't yet use the PMS interrupt.
 325  */
 326
 327 static void pms_hstart(struct pms *dev, short start)
 328 {
 329         switch (dev->decoder) {
 330         case PHILIPS1:
 331                 pms_i2c_write(dev, 0x8a, 0x05, start);
 332                 pms_i2c_write(dev, 0x8a, 0x18, start);
 333                 break;
 334         case PHILIPS2:
 335                 pms_i2c_write(dev, 0x42, 0x05, start);
 336                 pms_i2c_write(dev, 0x42, 0x18, start);
 337                 break;
 338         }
 339 }
 340
 341 /*
 342  *      Bandpass filters
 343  */
 344
 345 static void pms_bandpass(struct pms *dev, short pass)
 346 {
 347         if (dev->decoder == PHILIPS2)
 348                 pms_i2c_andor(dev, 0x8a, 0x06, 0xcf, (pass & 0x03) << 4);
 349         else if (dev->decoder == PHILIPS1)
 350                 pms_i2c_andor(dev, 0x42, 0x06, 0xcf, (pass & 0x03) << 4);
 351 }
 352
 353 static void pms_antisnow(struct pms *dev, short snow)
 354 {
 355         if (dev->decoder == PHILIPS2)
 356                 pms_i2c_andor(dev, 0x8a, 0x06, 0xf3, (snow & 0x03) << 2);
 357         else if (dev->decoder == PHILIPS1)
 358                 pms_i2c_andor(dev, 0x42, 0x06, 0xf3, (snow & 0x03) << 2);
 359 }
 360
 361 static void pms_sharpness(struct pms *dev, short sharp)
 362 {
 363         if (dev->decoder == PHILIPS2)
 364                 pms_i2c_andor(dev, 0x8a, 0x06, 0xfc, sharp & 0x03);
 365         else if (dev->decoder == PHILIPS1)
 366                 pms_i2c_andor(dev, 0x42, 0x06, 0xfc, sharp & 0x03);
 367 }
 368
 369 static void pms_chromaagc(struct pms *dev, short agc)
 370 {
 371         if (dev->decoder == PHILIPS2)
 372                 pms_i2c_andor(dev, 0x8a, 0x0c, 0x9f, (agc & 0x03) << 5);
 373         else if (dev->decoder == PHILIPS1)
 374                 pms_i2c_andor(dev, 0x42, 0x0c, 0x9f, (agc & 0x03) << 5);
 375 }
 376
 377 static void pms_vertnoise(struct pms *dev, short noise)
 378 {
 379         if (dev->decoder == PHILIPS2)
 380                 pms_i2c_andor(dev, 0x8a, 0x10, 0xfc, noise & 3);
 381         else if (dev->decoder == PHILIPS1)
 382                 pms_i2c_andor(dev, 0x42, 0x10, 0xfc, noise & 3);
 383 }
 384
 385 static void pms_forcecolour(struct pms *dev, short colour)
 386 {
 387         if (dev->decoder == PHILIPS2)
 388                 pms_i2c_andor(dev, 0x8a, 0x0c, 0x7f, (colour & 1) << 7);
 389         else if (dev->decoder == PHILIPS1)
 390                 pms_i2c_andor(dev, 0x42, 0x0c, 0x7, (colour & 1) << 7);
 391 }
 392
 393 static void pms_antigamma(struct pms *dev, short gamma)
 394 {
 395         if (dev->decoder == PHILIPS2)
 396                 pms_i2c_andor(dev, 0xb8, 0x00, 0x7f, (gamma & 1) << 7);
 397         else if (dev->decoder == PHILIPS1)
 398                 pms_i2c_andor(dev, 0x42, 0x20, 0x7, (gamma & 1) << 7);
 399 }
 400
 401 static void pms_prefilter(struct pms *dev, short filter)
 402 {
 403         if (dev->decoder == PHILIPS2)
 404                 pms_i2c_andor(dev, 0x8a, 0x06, 0xbf, (filter & 1) << 6);
 405         else if (dev->decoder == PHILIPS1)
 406                 pms_i2c_andor(dev, 0x42, 0x06, 0xbf, (filter & 1) << 6);
 407 }
 408
 409 static void pms_hfilter(struct pms *dev, short filter)
 410 {
 411         if (dev->decoder == PHILIPS2)
 412                 pms_i2c_andor(dev, 0xb8, 0x04, 0x1f, (filter & 7) << 5);
 413         else if (dev->decoder == PHILIPS1)
 414                 pms_i2c_andor(dev, 0x42, 0x24, 0x1f, (filter & 7) << 5);
 415 }
 416
 417 static void pms_vfilter(struct pms *dev, short filter)
 418 {
 419         if (dev->decoder == PHILIPS2)
 420                 pms_i2c_andor(dev, 0xb8, 0x08, 0x9f, (filter & 3) << 5);
 421         else if (dev->decoder == PHILIPS1)
 422                 pms_i2c_andor(dev, 0x42, 0x28, 0x9f, (filter & 3) << 5);
 423 }
 424
 425 static void pms_killcolour(struct pms *dev, short colour)
 426 {
 427         if (dev->decoder == PHILIPS2) {
 428                 pms_i2c_andor(dev, 0x8a, 0x08, 0x07, (colour & 0x1f) << 3);
 429                 pms_i2c_andor(dev, 0x8a, 0x09, 0x07, (colour & 0x1f) << 3);
 430         } else if (dev->decoder == PHILIPS1) {
 431                 pms_i2c_andor(dev, 0x42, 0x08, 0x07, (colour & 0x1f) << 3);
 432                 pms_i2c_andor(dev, 0x42, 0x09, 0x07, (colour & 0x1f) << 3);
 433         }
 434 }
 435
 436 static void pms_chromagain(struct pms *dev, short chroma)
 437 {
 438         if (dev->decoder == PHILIPS2)
 439                 pms_i2c_write(dev, 0x8a, 0x11, chroma);
 440         else if (dev->decoder == PHILIPS1)
 441                 pms_i2c_write(dev, 0x42, 0x11, chroma);
 442 }
 443
 444
 445 static void pms_spacialcompl(struct pms *dev, short data)
 446 {
 447         mvv_write(dev, 0x3b, data);
 448 }
 449
 450 static void pms_spacialcomph(struct pms *dev, short data)
 451 {
 452         mvv_write(dev, 0x3a, data);
 453 }
 454
 455 static void pms_vstart(struct pms *dev, short start)
 456 {
 457         mvv_write(dev, 0x16, start);
 458         mvv_write(dev, 0x17, (start >> 8) & 0x01);
 459 }
 460
 461 #endif
 462
 463 static void pms_secamcross(struct pms *dev, short cross)
 464 {
 465         if (dev->decoder == PHILIPS2)
 466                 pms_i2c_andor(dev, 0x8a, 0x0f, 0xdf, (cross & 1) << 5);
 467         else if (dev->decoder == PHILIPS1)
 468                 pms_i2c_andor(dev, 0x42, 0x0f, 0xdf, (cross & 1) << 5);
 469 }
 470
 471
 472 static void pms_swsense(struct pms *dev, short sense)
 473 {
 474         if (dev->decoder == PHILIPS2) {
 475                 pms_i2c_write(dev, 0x8a, 0x0a, sense);
 476                 pms_i2c_write(dev, 0x8a, 0x0b, sense);
 477         } else if (dev->decoder == PHILIPS1) {
 478                 pms_i2c_write(dev, 0x42, 0x0a, sense);
 479                 pms_i2c_write(dev, 0x42, 0x0b, sense);
 480         }
 481 }
 482
 483
 484 static void pms_framerate(struct pms *dev, short frr)
 485 {
 486         int fps = (dev->std & V4L2_STD_525_60) ? 30 : 25;
 487
 488         if (frr == 0)
 489                 return;
 490         fps = fps/frr;
 491         mvv_write(dev, 0x14, 0x80 | fps);
 492         mvv_write(dev, 0x15, 1);
 493 }
 494
 495 static void pms_vert(struct pms *dev, u8 deciden, u8 decinum)
 496 {
 497         mvv_write(dev, 0x1c, deciden);  /* Denominator */
 498         mvv_write(dev, 0x1d, decinum);  /* Numerator */
 499 }
 500
 501 /*
 502  *      Turn 16bit ratios into best small ratio the chipset can grok
 503  */
 504
 505 static void pms_vertdeci(struct pms *dev, unsigned short decinum, unsigned short deciden)
 506 {
 507         /* Knock it down by / 5 once */
 508         if (decinum % 5 == 0) {
 509                 deciden /= 5;
 510                 decinum /= 5;
 511         }
 512         /*
 513          *      3's
 514          */
 515         while (decinum % 3 == 0 && deciden % 3 == 0) {
 516                 deciden /= 3;
 517                 decinum /= 3;
 518         }
 519         /*
 520          *      2's
 521          */
 522         while (decinum % 2 == 0 && deciden % 2 == 0) {
 523                 decinum /= 2;
 524                 deciden /= 2;
 525         }
 526         /*
 527          *      Fudgyify
 528          */
 529         while (deciden > 32) {
 530                 deciden /= 2;
 531                 decinum = (decinum + 1) / 2;
 532         }
 533         if (deciden == 32)
 534                 deciden--;
 535         pms_vert(dev, deciden, decinum);
 536 }
 537
 538 static void pms_horzdeci(struct pms *dev, short decinum, short deciden)
 539 {
 540         if (decinum <= 512) {
 541                 if (decinum % 5 == 0) {
 542                         decinum /= 5;
 543                         deciden /= 5;
 544                 }
 545         } else {
 546                 decinum = 512;
 547                 deciden = 640;  /* 768 would be ideal */
 548         }
 549
 550         while (((decinum | deciden) & 1) == 0) {
 551                 decinum >>= 1;
 552                 deciden >>= 1;
 553         }
 554         while (deciden > 32) {
 555                 deciden >>= 1;
 556                 decinum = (decinum + 1) >> 1;
 557         }
 558         if (deciden == 32)
 559                 deciden--;
 560
 561         mvv_write(dev, 0x24, 0x80 | deciden);
 562         mvv_write(dev, 0x25, decinum);
 563 }
 564
 565 static void pms_resolution(struct pms *dev, short width, short height)
 566 {
 567         int fg_height;
 568
 569         fg_height = height;
 570         if (fg_height > 280)
 571                 fg_height = 280;
 572
 573         mvv_write(dev, 0x18, fg_height);
 574         mvv_write(dev, 0x19, fg_height >> 8);
 575
 576         if (dev->std & V4L2_STD_525_60) {
 577                 mvv_write(dev, 0x1a, 0xfc);
 578                 mvv_write(dev, 0x1b, 0x00);
 579                 if (height > fg_height)
 580                         pms_vertdeci(dev, 240, 240);
 581                 else
 582                         pms_vertdeci(dev, fg_height, 240);
 583         } else {
 584                 mvv_write(dev, 0x1a, 0x1a);
 585                 mvv_write(dev, 0x1b, 0x01);
 586                 if (fg_height > 256)
 587                         pms_vertdeci(dev, 270, 270);
 588                 else
 589                         pms_vertdeci(dev, fg_height, 270);
 590         }
 591         mvv_write(dev, 0x12, 0);
 592         mvv_write(dev, 0x13, MVVMEMORYWIDTH);
 593         mvv_write(dev, 0x42, 0x00);
 594         mvv_write(dev, 0x43, 0x00);
 595         mvv_write(dev, 0x44, MVVMEMORYWIDTH);
 596
 597         mvv_write(dev, 0x22, width + 8);
 598         mvv_write(dev, 0x23, (width + 8) >> 8);
 599
 600         if (dev->std & V4L2_STD_525_60)
 601                 pms_horzdeci(dev, width, 640);
 602         else
 603                 pms_horzdeci(dev, width + 8, 768);
 604
 605         mvv_write(dev, 0x30, mvv_read(dev, 0x30) & 0xfe);
 606         mvv_write(dev, 0x08, mvv_read(dev, 0x08) | 0x01);
 607         mvv_write(dev, 0x01, mvv_read(dev, 0x01) & 0xfd);
 608         mvv_write(dev, 0x32, 0x00);
 609         mvv_write(dev, 0x33, MVVMEMORYWIDTH);
 610 }
 611
 612
 613 /*
 614  *      Set Input
 615  */
 616
 617 static void pms_vcrinput(struct pms *dev, short input)
 618 {
 619         if (dev->decoder == PHILIPS2)
 620                 pms_i2c_andor(dev, 0x8a, 0x0d, 0x7f, (input & 1) << 7);
 621         else if (dev->decoder == PHILIPS1)
 622                 pms_i2c_andor(dev, 0x42, 0x0d, 0x7f, (input & 1) << 7);
 623 }
 624
 625
 626 static int pms_capture(struct pms *dev, char __user *buf, int rgb555, int count)
 627 {
 628         int y;
 629         int dw = 2 * dev->width;
 630         char tmp[dw + 32]; /* using a temp buffer is faster than direct  */
 631         int cnt = 0;
 632         int len = 0;
 633         unsigned char r8 = 0x5;  /* value for reg8  */
 634
 635         if (rgb555)
 636                 r8 |= 0x20; /* else use untranslated rgb = 565 */
 637         mvv_write(dev, 0x08, r8); /* capture rgb555/565, init DRAM, PC enable */
 638
 639 /*      printf("%d %d %d %d %d %x %x\n",width,height,voff,nom,den,mvv_buf); */
 640
 641         for (y = 0; y < dev->height; y++) {
 642                 writeb(0, dev->mem);  /* synchronisiert neue Zeile */
 643
 644                 /*
 645                  *      This is in truth a fifo, be very careful as if you
 646                  *      forgot this odd things will occur 8)
 647                  */
 648
 649                 memcpy_fromio(tmp, dev->mem, dw + 32); /* discard 16 word   */
 650                 cnt -= dev->height;
 651                 while (cnt <= 0) {
 652                         /*
 653                          *      Don't copy too far
 654                          */
 655                         int dt = dw;
 656                         if (dt + len > count)
 657                                 dt = count - len;
 658                         cnt += dev->height;
 659                         if (copy_to_user(buf, tmp + 32, dt))
 660                                 return len ? len : -EFAULT;
 661                         buf += dt;
 662                         len += dt;
 663                 }
 664         }
 665         return len;
 666 }
 667
 668
 669 /*
 670  *      Video4linux interfacing
 671  */
 672
 673 static int pms_querycap(struct file *file, void  *priv,
 674                                         struct v4l2_capability *vcap)
 675 {
 676         struct pms *dev = video_drvdata(file);
 677
 678         strlcpy(vcap->driver, dev->v4l2_dev.name, sizeof(vcap->driver));
 679         strlcpy(vcap->card, "Mediavision PMS", sizeof(vcap->card));
 680         strlcpy(vcap->bus_info, "ISA", sizeof(vcap->bus_info));
 681         vcap->version = KERNEL_VERSION(0, 0, 3);
 682         vcap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
 683         return 0;
 684 }
 685
 686 static int pms_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
 687 {
 688         static const char *inputs[4] = {
 689                 "Composite",
 690                 "S-Video",
 691                 "Composite (VCR)",
 692                 "S-Video (VCR)"
 693         };
 694
 695         if (vin->index > 3)
 696                 return -EINVAL;
 697         strlcpy(vin->name, inputs[vin->index], sizeof(vin->name));
 698         vin->type = V4L2_INPUT_TYPE_CAMERA;
 699         vin->audioset = 0;
 700         vin->tuner = 0;
 701         vin->std = V4L2_STD_ALL;
 702         vin->status = 0;
 703         return 0;
 704 }
 705
 706 static int pms_g_input(struct file *file, void *fh, unsigned int *inp)
 707 {
 708         struct pms *dev = video_drvdata(file);
 709
 710         *inp = dev->input;
 711         return 0;
 712 }
 713
 714 static int pms_s_input(struct file *file, void *fh, unsigned int inp)
 715 {
 716         struct pms *dev = video_drvdata(file);
 717
 718         if (inp > 3)
 719                 return -EINVAL;
 720
 721         mutex_lock(&dev->lock);
 722         dev->input = inp;
 723         pms_videosource(dev, inp & 1);
 724         pms_vcrinput(dev, inp >> 1);
 725         mutex_unlock(&dev->lock);
 726         return 0;
 727 }
 728
 729 static int pms_g_std(struct file *file, void *fh, v4l2_std_id *std)
 730 {
 731         struct pms *dev = video_drvdata(file);
 732
 733         *std = dev->std;
 734         return 0;
 735 }
 736
 737 static int pms_s_std(struct file *file, void *fh, v4l2_std_id *std)
 738 {
 739         struct pms *dev = video_drvdata(file);
 740         int ret = 0;
 741
 742         dev->std = *std;
 743         mutex_lock(&dev->lock);
 744         if (dev->std & V4L2_STD_NTSC) {
 745                 pms_framerate(dev, 30);
 746                 pms_secamcross(dev, 0);
 747                 pms_format(dev, 1);
 748         } else if (dev->std & V4L2_STD_PAL) {
 749                 pms_framerate(dev, 25);
 750                 pms_secamcross(dev, 0);
 751                 pms_format(dev, 2);
 752         } else if (dev->std & V4L2_STD_SECAM) {
 753                 pms_framerate(dev, 25);
 754                 pms_secamcross(dev, 1);
 755                 pms_format(dev, 2);
 756         } else {
 757                 ret = -EINVAL;
 758         }
 759         /*
 760         switch (v->mode) {
 761         case VIDEO_MODE_AUTO:
 762                 pms_framerate(dev, 25);
 763                 pms_secamcross(dev, 0);
 764                 pms_format(dev, 0);
 765                 break;
 766         }*/
 767         mutex_unlock(&dev->lock);
 768         return 0;
 769 }
 770
 771 static int pms_queryctrl(struct file *file, void *priv,
 772                                         struct v4l2_queryctrl *qc)
 773 {
 774         switch (qc->id) {
 775         case V4L2_CID_BRIGHTNESS:
 776                 return v4l2_ctrl_query_fill(qc, 0, 255, 1, 139);
 777         case V4L2_CID_CONTRAST:
 778                 return v4l2_ctrl_query_fill(qc, 0, 255, 1, 70);
 779         case V4L2_CID_SATURATION:
 780                 return v4l2_ctrl_query_fill(qc, 0, 255, 1, 64);
 781         case V4L2_CID_HUE:
 782                 return v4l2_ctrl_query_fill(qc, 0, 255, 1, 0);
 783         }
 784         return -EINVAL;
 785 }
 786
 787 static int pms_g_ctrl(struct file *file, void *priv,
 788                                         struct v4l2_control *ctrl)
 789 {
 790         struct pms *dev = video_drvdata(file);
 791         int ret = 0;
 792
 793         switch (ctrl->id) {
 794         case V4L2_CID_BRIGHTNESS:
 795                 ctrl->value = dev->brightness;
 796                 break;
 797         case V4L2_CID_CONTRAST:
 798                 ctrl->value = dev->contrast;
 799                 break;
 800         case V4L2_CID_SATURATION:
 801                 ctrl->value = dev->saturation;
 802                 break;
 803         case V4L2_CID_HUE:
 804                 ctrl->value = dev->hue;
 805                 break;
 806         default:
 807                 ret = -EINVAL;
 808                 break;
 809         }
 810         return ret;
 811 }
 812
 813 static int pms_s_ctrl(struct file *file, void *priv,
 814                                         struct v4l2_control *ctrl)
 815 {
 816         struct pms *dev = video_drvdata(file);
 817         int ret = 0;
 818
 819         mutex_lock(&dev->lock);
 820         switch (ctrl->id) {
 821         case V4L2_CID_BRIGHTNESS:
 822                 dev->brightness = ctrl->value;
 823                 pms_brightness(dev, dev->brightness);
 824                 break;
 825         case V4L2_CID_CONTRAST:
 826                 dev->contrast = ctrl->value;
 827                 pms_contrast(dev, dev->contrast);
 828                 break;
 829         case V4L2_CID_SATURATION:
 830                 dev->saturation = ctrl->value;
 831                 pms_saturation(dev, dev->saturation);
 832                 break;
 833         case V4L2_CID_HUE:
 834                 dev->hue = ctrl->value;
 835                 pms_hue(dev, dev->hue);
 836                 break;
 837         default:
 838                 ret = -EINVAL;
 839                 break;
 840         }
 841         mutex_unlock(&dev->lock);
 842         return ret;
 843 }
 844
 845 static int pms_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
 846 {
 847         struct pms *dev = video_drvdata(file);
 848         struct v4l2_pix_format *pix = &fmt->fmt.pix;
 849
 850         pix->width = dev->width;
 851         pix->height = dev->height;
 852         pix->pixelformat = dev->width == 15 ?
 853                             V4L2_PIX_FMT_RGB555 : V4L2_PIX_FMT_RGB565;
 854         pix->field = V4L2_FIELD_NONE;
 855         pix->bytesperline = 2 * dev->width;
 856         pix->sizeimage = 2 * dev->width * dev->height;
 857         /* Just a guess */
 858         pix->colorspace = V4L2_COLORSPACE_SRGB;
 859         return 0;
 860 }
 861
 862 static int pms_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
 863 {
 864         struct v4l2_pix_format *pix = &fmt->fmt.pix;
 865
 866         if (pix->height < 16 || pix->height > 480)
 867                 return -EINVAL;
 868         if (pix->width < 16 || pix->width > 640)
 869                 return -EINVAL;
 870         if (pix->pixelformat != V4L2_PIX_FMT_RGB555 &&
 871             pix->pixelformat != V4L2_PIX_FMT_RGB565)
 872                 return -EINVAL;
 873         pix->field = V4L2_FIELD_NONE;
 874         pix->bytesperline = 2 * pix->width;
 875         pix->sizeimage = 2 * pix->width * pix->height;
 876         /* Just a guess */
 877         pix->colorspace = V4L2_COLORSPACE_SRGB;
 878         return 0;
 879 }
 880
 881 static int pms_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
 882 {
 883         struct pms *dev = video_drvdata(file);
 884         struct v4l2_pix_format *pix = &fmt->fmt.pix;
 885         int ret = pms_try_fmt_vid_cap(file, fh, fmt);
 886
 887         if (ret)
 888                 return ret;
 889         mutex_lock(&dev->lock);
 890         dev->width = pix->width;
 891         dev->height = pix->height;
 892         dev->depth = (pix->pixelformat == V4L2_PIX_FMT_RGB555) ? 15 : 16;
 893         pms_resolution(dev, dev->width, dev->height);
 894         /* Ok we figured out what to use from our wide choice */
 895         mutex_unlock(&dev->lock);
 896         return 0;
 897 }
 898
 899 static int pms_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *fmt)
 900 {
 901         static struct v4l2_fmtdesc formats[] = {
 902                 { 0, 0, 0,
 903                   "RGB 5:5:5", V4L2_PIX_FMT_RGB555,
 904                   { 0, 0, 0, 0 }
 905                 },
 906                 { 0, 0, 0,
 907                   "RGB 5:6:5", V4L2_PIX_FMT_RGB565,
 908                   { 0, 0, 0, 0 }
 909                 },
 910         };
 911         enum v4l2_buf_type type = fmt->type;
 912
 913         if (fmt->index > 1)
 914                 return -EINVAL;
 915
 916         *fmt = formats[fmt->index];
 917         fmt->type = type;
 918         return 0;
 919 }
 920
 921 static ssize_t pms_read(struct file *file, char __user *buf,
 922                     size_t count, loff_t *ppos)
 923 {
 924         struct pms *dev = video_drvdata(file);
 925         int len;
 926
 927         mutex_lock(&dev->lock);
 928         len = pms_capture(dev, buf, (dev->depth == 15), count);
 929         mutex_unlock(&dev->lock);
 930         return len;
 931 }
 932
 933 static const struct v4l2_file_operations pms_fops = {
 934         .owner          = THIS_MODULE,
 935         .ioctl          = video_ioctl2,
 936         .read           = pms_read,
 937 };
 938
 939 static const struct v4l2_ioctl_ops pms_ioctl_ops = {
 940         .vidioc_querycap                    = pms_querycap,
 941         .vidioc_g_input                     = pms_g_input,
 942         .vidioc_s_input                     = pms_s_input,
 943         .vidioc_enum_input                  = pms_enum_input,
 944         .vidioc_g_std                       = pms_g_std,
 945         .vidioc_s_std                       = pms_s_std,
 946         .vidioc_queryctrl                   = pms_queryctrl,
 947         .vidioc_g_ctrl                      = pms_g_ctrl,
 948         .vidioc_s_ctrl                      = pms_s_ctrl,
 949         .vidioc_enum_fmt_vid_cap            = pms_enum_fmt_vid_cap,
 950         .vidioc_g_fmt_vid_cap               = pms_g_fmt_vid_cap,
 951         .vidioc_s_fmt_vid_cap               = pms_s_fmt_vid_cap,
 952         .vidioc_try_fmt_vid_cap             = pms_try_fmt_vid_cap,
 953 };
 954
 955 /*
 956  *      Probe for and initialise the Mediavision PMS
 957  */
 958
 959 static int init_mediavision(struct pms *dev)
 960 {
 961         int id;
 962         int idec, decst;
 963         int i;
 964         static const unsigned char i2c_defs[] = {
 965                 0x4c, 0x30, 0x00, 0xe8,
 966                 0xb6, 0xe2, 0x00, 0x00,
 967                 0xff, 0xff, 0x00, 0x00,
 968                 0x00, 0x00, 0x78, 0x98,
 969                 0x00, 0x00, 0x00, 0x00,
 970                 0x34, 0x0a, 0xf4, 0xce,
 971                 0xe4
 972         };
 973
 974         dev->mem = ioremap(mem_base, 0x800);
 975         if (!dev->mem)
 976                 return -ENOMEM;
 977
 978         if (!request_region(0x9a01, 1, "Mediavision PMS config")) {
 979                 printk(KERN_WARNING "mediavision: unable to detect: 0x9a01 in use.\n");
 980                 iounmap(dev->mem);
 981                 return -EBUSY;
 982         }
 983         if (!request_region(dev->io, 3, "Mediavision PMS")) {
 984                 printk(KERN_WARNING "mediavision: I/O port %d in use.\n", dev->io);
 985                 release_region(0x9a01, 1);
 986                 iounmap(dev->mem);
 987                 return -EBUSY;
 988         }
 989         outb(0xb8, 0x9a01);             /* Unlock */
 990         outb(dev->io >> 4, 0x9a01);     /* Set IO port */
 991
 992
 993         id = mvv_read(dev, 3);
 994         decst = pms_i2c_stat(dev, 0x43);
 995
 996         if (decst != -1)
 997                 idec = 2;
 998         else if (pms_i2c_stat(dev, 0xb9) != -1)
 999                 idec = 3;
1000         else if (pms_i2c_stat(dev, 0x8b) != -1)
1001                 idec = 1;
1002         else
1003                 idec = 0;
1004
1005         printk(KERN_INFO "PMS type is %d\n", idec);
1006         if (idec == 0) {
1007                 release_region(dev->io, 3);
1008                 release_region(0x9a01, 1);
1009                 iounmap(dev->mem);
1010                 return -ENODEV;
1011         }
1012
1013         /*
1014          *      Ok we have a PMS of some sort
1015          */
1016
1017         mvv_write(dev, 0x04, mem_base >> 12);   /* Set the memory area */
1018
1019         /* Ok now load the defaults */
1020
1021         for (i = 0; i < 0x19; i++) {
1022                 if (i2c_defs[i] == 0xff)
1023                         pms_i2c_andor(dev, 0x8a, i, 0x07, 0x00);
1024                 else
1025                         pms_i2c_write(dev, 0x8a, i, i2c_defs[i]);
1026         }
1027
1028         pms_i2c_write(dev, 0xb8, 0x00, 0x12);
1029         pms_i2c_write(dev, 0xb8, 0x04, 0x00);
1030         pms_i2c_write(dev, 0xb8, 0x07, 0x00);
1031         pms_i2c_write(dev, 0xb8, 0x08, 0x00);
1032         pms_i2c_write(dev, 0xb8, 0x09, 0xff);
1033         pms_i2c_write(dev, 0xb8, 0x0a, 0x00);
1034         pms_i2c_write(dev, 0xb8, 0x0b, 0x10);
1035         pms_i2c_write(dev, 0xb8, 0x10, 0x03);
1036
1037         mvv_write(dev, 0x01, 0x00);
1038         mvv_write(dev, 0x05, 0xa0);
1039         mvv_write(dev, 0x08, 0x25);
1040         mvv_write(dev, 0x09, 0x00);
1041         mvv_write(dev, 0x0a, 0x20 | MVVMEMORYWIDTH);
1042
1043         mvv_write(dev, 0x10, 0x02);
1044         mvv_write(dev, 0x1e, 0x0c);
1045         mvv_write(dev, 0x1f, 0x03);
1046         mvv_write(dev, 0x26, 0x06);
1047
1048         mvv_write(dev, 0x2b, 0x00);
1049         mvv_write(dev, 0x2c, 0x20);
1050         mvv_write(dev, 0x2d, 0x00);
1051         mvv_write(dev, 0x2f, 0x70);
1052         mvv_write(dev, 0x32, 0x00);
1053         mvv_write(dev, 0x33, MVVMEMORYWIDTH);
1054         mvv_write(dev, 0x34, 0x00);
1055         mvv_write(dev, 0x35, 0x00);
1056         mvv_write(dev, 0x3a, 0x80);
1057         mvv_write(dev, 0x3b, 0x10);
1058         mvv_write(dev, 0x20, 0x00);
1059         mvv_write(dev, 0x21, 0x00);
1060         mvv_write(dev, 0x30, 0x22);
1061         return 0;
1062 }
1063
1064 /*
1065  *      Initialization and module stuff
1066  */
1067
1068 #ifndef MODULE
1069 static int enable;
1070 module_param(enable, int, 0);
1071 #endif
1072
1073 static int __init pms_init(void)
1074 {
1075         struct pms *dev = &pms_card;
1076         struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
1077         int res;
1078
1079         strlcpy(v4l2_dev->name, "pms", sizeof(v4l2_dev->name));
1080
1081         v4l2_info(v4l2_dev, "Mediavision Pro Movie Studio driver 0.03\n");
1082
1083 #ifndef MODULE
1084         if (!enable) {
1085                 v4l2_err(v4l2_dev,
1086                         "PMS: not enabled, use pms.enable=1 to probe\n");
1087                 return -ENODEV;
1088         }
1089 #endif
1090
1091         dev->decoder = PHILIPS2;
1092         dev->io = io_port;
1093         dev->data = io_port + 1;
1094
1095         if (init_mediavision(dev)) {
1096                 v4l2_err(v4l2_dev, "Board not found.\n");
1097                 return -ENODEV;
1098         }
1099
1100         res = v4l2_device_register(NULL, v4l2_dev);
1101         if (res < 0) {
1102                 v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
1103                 return res;
1104         }
1105
1106         strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name));
1107         dev->vdev.v4l2_dev = v4l2_dev;
1108         dev->vdev.fops = &pms_fops;
1109         dev->vdev.ioctl_ops = &pms_ioctl_ops;
1110         dev->vdev.release = video_device_release_empty;
1111         video_set_drvdata(&dev->vdev, dev);
1112         mutex_init(&dev->lock);
1113         dev->std = V4L2_STD_NTSC_M;
1114         dev->height = 240;
1115         dev->width = 320;
1116         dev->depth = 15;
1117         dev->brightness = 139;
1118         dev->contrast = 70;
1119         dev->hue = 0;
1120         dev->saturation = 64;
1121         pms_swsense(dev, 75);
1122         pms_resolution(dev, 320, 240);
1123         pms_videosource(dev, 0);
1124         pms_vcrinput(dev, 0);
1125         if (video_register_device(&dev->vdev, VFL_TYPE_GRABBER, video_nr) < 0) {
1126                 v4l2_device_unregister(&dev->v4l2_dev);
1127                 release_region(dev->io, 3);
1128                 release_region(0x9a01, 1);
1129                 iounmap(dev->mem);
1130                 return -EINVAL;
1131         }
1132         return 0;
1133 }
1134
1135 static void __exit pms_exit(void)
1136 {
1137         struct pms *dev = &pms_card;
1138
1139         video_unregister_device(&dev->vdev);
1140         release_region(dev->io, 3);
1141         release_region(0x9a01, 1);
1142         iounmap(dev->mem);
1143 }
1144
1145 module_init(pms_init);
1146 module_exit(pms_exit);